68577793 has 4 divisors (see below), whose sum is σ = 69348420. Its totient is φ = 67807168.

The previous prime is 68577791. The next prime is 68577799. The reversal of 68577793 is 39777586.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 40094224 + 28483569 = 6332^2 + 5337^2 .

It is a cyclic number.

It is not a de Polignac number, because 68577793 - 2¹ = 68577791 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 68577793.

It is not an unprimeable number, because it can be changed into a prime (68577791) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 385180 + ... + 385357.

It is an arithmetic number, because the mean of its divisors is an integer number (17337105).

Almost surely, 2^68577793 is an apocalyptic number.

It is an amenable number.

68577793 is a deficient number, since it is larger than the sum of its proper divisors (770627).

68577793 is an equidigital number, since it uses as much as digits as its factorization.

68577793 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 770626.

The product of its digits is 2222640, while the sum is 52.

The square root of 68577793 is about 8281.1709920759. The cubic root of 68577793 is about 409.3183060233.

The spelling of 68577793 in words is "sixty-eight million, five hundred seventy-seven thousand, seven hundred ninety-three".